Gas-engine crank.



PATENTED SEPT. 25, 1906.

2 SHEETS-SHEET 1.

W. R. EVERETT.

GAS ENGINE CRANK.

APPLICATION FILED rmzs, 1905.

PATENTED SEPT. 25, 1906.

W. R. EVERETT. GAS ENGINE CRANK. APPLIOATION PHI/ED112323, 1905.

2 SHEETSSHEET 2 B Y W W! T NE SSLLS Q k v 1 ULVTU/C ,(p ATTORNEY.

r en

'wiLLrAM Evnen'rr. or onicAco. ILLiNGlS.

Trio 831,6Q8. {specification of Letters Patent.

Patented Sept. 25, 1906.

Application filed February 23, 1906. Serial No. 248,90?-

thus constructed are brazed or welded together. It is to be noted that a, crenlrthus constructed will have the requisite degree or" strength to resist the strain lsced upon it, while at the same time it will be very much lighter than the ordinary flange crank an will' reduce the construction expense mete rislly. In the construction of enginecrenks they are made of large diameter principally to se cure the required bearing-surface, and it is a recognized fact that in practice the motel near the centerof a bar is of little or no essistance in withstandin Y the strain is principsli y metsl at or near the surface of the her.

To all wizlom it may concern: I

Be it known that I, NiLLiAM R. EVERETT, c citizen of the United States, residing at Chicsgo, in the count of Cookend' State of l Illinois, have invents V certain new and use i in; Improvements in Ges-nn ine Cranks, of which the following is s speci lcetion.

The object of my invention is to improve the construction'oi cranks for engines.

To this end my invention consists of the parts and combination parts hereinafter desciibed iind claimed:

Lily improvement may be more readily understoodby listing reference to the accom pcnying' drewin are a part of this gs, which specif cation and are hereunto annexed, in

taken up by the For which this reason u tube will furnish slmostss greet Figure l is aside eievstion of a crank conability for resisting a torqne as a rod. It

. structed according to my invention. Fig. 2" will therefore be seen that by my construcis s. top or'plsn View of the same. Fig. 3 is tion it becomes possible to design a crsn one 05 the longitudinal sections which may be used to form the crank. Fig

formed to furnish the of e sharp corner.

an end View of the same. Fig. 4 is a viewof which will'hsve ample becring suirsce without the enormous weight re uired to secure this result in the present met d.

I am aware that changes may be made in the construction of my Improved crank by those skilled in the art. For example, the

. 5 is s top or plan View of the same. Fig. 6 is an end View of the some. Fig. 7 is an end View of the same having part of the metal broken away to show the interior construction. Fig. 8 183 two sections may be formed from one piece, side elevation of a crenk constructed eccordso that there Wlll only be one seem or oint. ing to my invention where reinforcing-collars Having described my invention, w at I are used on the journal-bearings. claim, and desire to secure by Letters Patent,

In the drswin s, 1 indicates a sheet-metal isbody portion wl iich is made up or formed 1. A crank for engines, comprising two from the two similurlongitudinsl sheet-metal l longitudinal sections tornied r'rorn two simisections 3 and 4, as more clearly shown in lsr longitudinal sheet-metal sections, the Figs. 4 5, end 6. The ends 5 and 6 are l ends thereof being cylindrical in form to costsmped in e cylindrical form to coincide l incide with the journolbec'ring, the center with the journul-beerin the center? being l being similarly shaped for furnishing the hearing for the conbearing for the connecting-rod, the center necting-rod, the arms 8 and 9 oi the crank and ends being joined by members of recbeing formed in rectangular shape, fillets 10 i tcnguler shape, the corners ut the junction being stamped at the corners not only for the i of the cylindrical and rectangular portions benefit of the hearing, but to avoid any posbeing curved, said sections being secured tosibility of a fracture of the metal on account gether, for the purpose set forth substantially as described.

2. A crank for engines, comprising two longitudinal sections iornied from two similar longitudinal sheet metal sections, the ends thereof being cylindrical in form to co- It may be found desirable in cranks designed for extremely heavy work to fit pollers 11 over the crank-journals, as shown in Fig. 8, these collars being shrunk or brazed upon the two end sections, thus firmly securincide with the journal-bearing, the center ing or clamping the'perts together. These being sixnilerlyshsped for furnishing the sections are stamped from-sheet-steel, and bearing for the connecting-rod, the center e torque and that joined by members of recunion of'the ends wi'ish the rectangular poxthe corners at 110. junction of i tions, for the purpcse sei; forth substantially i and rectal. (day per .113 110- as described. d, m (1 sections being securedto- VI ILLIAM EVERETT.

-17; iniorcingwoilars fittilig upun ami Witn esses comcminx'g with flu 12nd portzonspif the body, C. M. BURNAM', 'smd. colhra b81351 located at. the pemts 0f I J. H. CARROLL. 

